Name: ACL Chevrolet 4 121 1987-96 Engine Crankshaft Main Bearing Set
Brand: ACL
SKU: acl-acl-chevrolet-4-121-1987-96-engine-crankshaft-main-bearing-set-t14-632938
Price: 27.83 USD
Availability: BackOrder

Question 1

What does this bearing set do?

Accepted Answer

These bearings sit between the crankshaft and the engine block, allowing the crankshaft to spin freely. They are a wear item and should be replaced during an engine rebuild to maintain proper oil pressure and prevent engine damage.

Question 2

What else should I replace when replacing my main bearings?

Accepted Answer

When replacing your main bearings, it's best practice to also replace your rod bearings at the same time. You should also inspect the crankshaft for wear and have it machined if necessary.

Question 3

Are these standard size or undersized bearings?

Accepted Answer

This ACL 5M7124P-1.00 bearing set is 0.001 inch undersize. Make sure to measure your crankshaft before ordering to ensure you get the correct size.

Specifications

ACL Chevrolet 4 121 1987-96 Engine Crankshaft Main Bearing Set

Key Features

Specifications

Frequently Asked Questions

You Might Also Like

ACL 81-98 Mazda 4 1498-1597-1840cc B5/B6/BP .25mm Oversized Main Bearing Set

ACL 88-95 Honda 1590/1958/2056CC D17 Standard Size Main Bearing Set (5M1957-STD)

ACL Honda 4 1590cc B16A VTEC 1995-on Engine Connecting Rod Bearing Set

ACL Nissan VQ35HR / VQ37VHR Standard Size High Performance Rod Bearing Set

ACL 81-98 Mazda 4 1498-1597-1840cc B5/B6/BP .25mm Oversized Main Bearing Set

ACL 88-95 Honda 1590/1958/2056CC D17 Standard Size Main Bearing Set (5M1957-STD)

ACL Honda 4 1590cc B16A VTEC 1995-on Engine Connecting Rod Bearing Set

ACL Nissan VQ35HR / VQ37VHR Standard Size High Performance Rod Bearing Set